static int filter_encode_write_frame(AVFrame *frame, unsigned int stream_index)
{
int ret;
AVFrame *filt_frame;
av_log(NULL, AV_LOG_INFO, "Pushing decoded frame to filters\n");
/* push the decoded frame into the filtergraph */
ret = av_buffersrc_add_frame_flags(filter_ctx[stream_index].buffersrc_ctx,
frame, 0);
if (ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "Error while feeding the filtergraph\n");
return ret;
}
/* pull filtered frames from the filtergraph */
while (1)
{
filt_frame = av_frame_alloc();
if (!filt_frame)
{
ret = AVERROR(ENOMEM);
break;
}
av_log(NULL, AV_LOG_INFO, "Pulling filtered frame from filters\n");
ret = av_buffersink_get_frame(filter_ctx[stream_index].buffersink_ctx,
filt_frame);
if (ret < 0)
{
/* if no more frames for output - returns AVERROR(EAGAIN)
* if flushed and no more frames for output - returns AVERROR_EOF
* rewrite retcode to 0 to show it as normal procedure completion
*/
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
ret = 0;
av_frame_free(&filt_frame);
break;
}
filt_frame->pict_type = AV_PICTURE_TYPE_NONE;
ret = encode_write_frame(filt_frame, stream_index, NULL);
if (ret < 0)
break;
}
return ret;
}
static int flush_encoder(unsigned int stream_index)
{
int ret;
int got_frame;
if (!(ofmt_ctx->streams[stream_index]->codec->codec->capabilities &
CODEC_CAP_DELAY))
return 0;
while (1) {
av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder\n", stream_index);
ret = encode_write_frame(NULL, stream_index, &got_frame);
if (ret < 0)
break;
if (!got_frame)
return 0;
}
return ret;
}
int flush_encoder(unsigned int streamIdx)
{
int ret;
int got_frame;
if (!(ofmt_ctx->streams[streamIdx]->codec->codec->capabilities & CODEC_CAP_DELAY))
return 0;
while (1) {
ret = encode_write_frame(NULL, streamIdx, &got_frame);
if (ret < 0)
break;
if (!got_frame)
return 0;
//av_log(NULL, AV_LOG_INFO, "Flushing stream #%u encoder %d \n", streamIdx, frame_use);
frame_use++;
}
return ret;
}
int main()
{
int ret=0, check_yuv = 0;
AVPacket pkt;
AVFrame *frame = NULL;
enum AVMediaType mediaType;
unsigned int streamIdx;
unsigned int i;
int gotFrame;
check_yuv = check_file();
//inititialize all the registers
av_register_all();
if (open_input_file(check_yuv) < 0) exit(1);
if (open_output_file() < 0) exit(1);
//initialize packet, set data to NULL
av_init_packet(&pkt);
pkt.data = NULL;
pkt.size = 0;
//read all packets
while (av_read_frame(inFmtCtx, &pkt) >= 0)
{
streamIdx = pkt.stream_index;
mediaType = inFmtCtx->streams[streamIdx]->codec->codec_type;
av_log(NULL, AV_LOG_DEBUG, "Demuxer gave frame of stream_index %u\n", streamIdx);
av_log(NULL, AV_LOG_DEBUG, "Going to reencode \n");
frame = av_frame_alloc();
if (!frame)
{
ret = AVERROR(ENOMEM);
break;
}
av_packet_rescale_ts(&pkt,inFmtCtx->streams[streamIdx]->time_base, inFmtCtx->streams[streamIdx]->codec->time_base);
if (mediaType == AVMEDIA_TYPE_VIDEO) {
ret = avcodec_decode_video2(inFmtCtx->streams[streamIdx]->codec, frame, &gotFrame, &pkt);
if (ret < 0)
{
av_frame_free(&frame);
av_log(NULL, AV_LOG_ERROR, "Decoding failed\n");
break;
}
}
if (gotFrame)
{
frame->pts = av_frame_get_best_effort_timestamp(frame);
ret = encode_write_frame(frame, streamIdx, &gotFrame);
//av_frame_free(&frame);
if (ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "Error Encoding Frame");
exit(1);
}
}
else av_frame_free(&frame);
av_free_packet(&pkt);
}
//flush encoders
for (i = 0; i < inFmtCtx->nb_streams; i++)
{
if (inFmtCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
ret = flush_encoder(i);
if (ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "Flushing encoder failed\n");
exit(1);
}
}
}
//free all
av_write_trailer(outFmtCtx);
av_free_packet(&pkt);
//av_frame_free(&frame);
for (i = 0; i < inFmtCtx->nb_streams; i++)
{
avcodec_close(inFmtCtx->streams[i]->codec);
if (outFmtCtx && outFmtCtx->nb_streams > i && outFmtCtx->streams[i] && outFmtCtx->streams[i]->codec)
avcodec_close(outFmtCtx->streams[i]->codec);
}
avformat_close_input(&inFmtCtx);
if (outFmtCtx && !(outFmtCtx->oformat->flags & AVFMT_NOFILE))
avio_closep(&outFmtCtx->pb);
avformat_free_context(outFmtCtx);
if (ret < 0)
av_log(NULL, AV_LOG_ERROR, "Error occurred \n");
return 0;
}
